Patents Assigned to Hirotaka Manufacturing Co., Ltd.
  • Directional control valve for pneumatic cylinder
    Patent number: 5261314
    Abstract: A directional control valve for a pneumatic cylinder in which a piston of the cylinder can be lowered and elevated in a high speed with a minimum air consumption and the lowering/rising speed of the piston can be controlled before it reaches the upper/lower end portions to prevent bounding of the piston.
    Type: Grant
    Filed: November 15, 1991
    Date of Patent: November 16, 1993
    Assignee: Hirotaka Manufacturing Co., Ltd.
    Inventor: Takashi Kimura
  • Directional control valve for pneumatic cylinder
    Patent number: 5065665
    Abstract: A directional control valve for a penumatic cylinder in which a piston of the cylinder can be lowered and elevated in a high speed with a minimum air consumption and the lowering/rising speed of the piston can be controlled before it reaches the upper/lower end portions to prevent bounding of the piston.
    Type: Grant
    Filed: November 28, 1989
    Date of Patent: November 19, 1991
    Assignee: Hirotaka Manufacturing Co., Ltd.
    Inventor: Takashi Kimura